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Crawler tractors
PR 724 – PR 764
Product information
Refuse handling and
landfi ll applications
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PR 724 Litronic – PR 764 Litronic
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Work in landfi lls demands a great deal in terms of machine versatility and robustness. Crawler tractors meet
these requirements perfectly. They are used for stockpiling and compressing refuse, but also for all earth
moving tasks, such as site preparation, building slopes,
as well as spreading and fi ne grading cover material.
Liebherr crawler tractors in the PR 724 to PR 764 model
sizes have purpose-built attachment kits for landfi ll applications. These ensure maximum effi ciency and service
life of the machine, even under the most diffi cult working
conditions and in aggressive materials.
A range of additional options can also be individually
confi gured depending on the application. This allows the
crawler to be optimally adapted to any task.
PR 724 Litronic – PR 764 Litronic
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Overview of landfi ll equipment
Equipment options for landfi ll applications
Additional lights
Reversible fan
Trash rack
Thermal shielding
for exhaust
system
Engine compartment sealing
Engine air
pre-fi lter
Hydraulic oil
thermometer
Rotating beacon
Fire extinguisher
Seal between cab
and base machine
Rear ripper or
counterweight
Tank
guard
Rear striker bar
(not shown)
External air supply
for alternator
Hydraulic cylinder
protective cover
Track shoes with
trapezoidal holes
(not shown)
Protective bars
on side covers
Final drive seal guardsSprocket segments
with recesses
PR 724 Litronic – PR 764 Litronic
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PR 724 – PR 764 landfi ll equipment
Recommended PR 724 PR 734 PR 744 PR 754 PR 764
Belly pan sealing – MMMM
Sealing cab-base machine M M M M M
Engine compartment sealing M M M M M
Trash racks for different blades O O O O O
Bottom tank guard M M M M M
Left and right tank guard bars – – M M M
Track shoes with trapezoidal holes O O O O O
Thermal shield turbocharger M M – – –
External air supply for alternator – – M M M
Fire extinguisher O O O O O
Thermal shield for exhaust system O – M M M
Hydraulic oil thermometer M M M M M
Engine air pre-fi lter O O M M Series
Automatic reversible fan M M O O O
Hydraulic hose protective covers – – M M M
Hydraulic cylinder protective covers O O O O O
Protective bars on side covers M M M M M
Protection rings for fi nal drives – O M M M
Sprocket segments with recesses O O O O O
Additional lights on lifting cylinders O O M M O
Depending on application PR 724 PR 734 PR 744 PR 754 PR 764
Front striker bar – – O O O
Rear striker bar O OOOO
All-round tank guard O O – – –
Fire suppression system On request
Rear counterweight O OOOO
Rear counterweight with stowage compartment
––OO–
Track guard O OOOO
Dark engine hood On request
Back-up alarm O OOOO
Rotating beacon O OOOO
Additional cab air fi ltration On request
Oil cooler guard – – O O O
M … included in landfi ll kit for this machine
O … optional
Modifi cations reserved
PR 724 Litronic – PR 764 Litronic
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Options in detail
Trash rack
Refuse has a comparably low specifi c weight. A trash rack increases
the blade capacity, which results in
signifi cantly higher pushing performance per cycle.
The grid also allows the operator a
good view of the material to be transported.
Track shoes with trapezoidal holes
Trapezoidal holes in the track shoes assist in the removal
of debris and prevent the build up of material between
sprocket and chain.
PR 724 Litronic – PR 764 Litronic
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Sprocket segments with recesses
The side recesses in the sprocket segments help to remove debris between chain bushings and teeth. In conjunction with the track shoes with trapezoidal holes, they
counteract the build up of debris between chain bushings
and sprocket.
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Options in detail
Final drive seal guards
Liebherr crawler tractors are equipped
with fi nal drives with double seals
and automatic seal monitoring.
The sturdy protective rings provide
additional safety for the seals, e.g.
against damage by pieces of wire.
Tank guard
Additional steel plates fi tted underneath the fuel tank and hydraulics
tank provide reliable protection from
bulky refuse.
An all-round tank guard for reinforcing the tanks from the side and
above is available as an option for
PR 724 and PR 734 crawlers.
Protective bars on side covers
These fenders steer debris which
accumulates between the basic
machine and track frame away from
the panelling and engine compartment doors, reducing the risk of
damage.
Protective covers
Various covers for hydraulic hoses
and cylinders are available for the
different crawler models and blade
types. These can be confi gured specifi cally for each dozer model.
PR 724 Litronic – PR 764 Litronic
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Options in detail
Reversible fan
The optional reversible fan reverses its
direction periodically and unclogs the
cooler from accumulated debris, such
as paper or plastic parts.
This function is also available for the
separate oil cooler in the PR 744,
PR 754 and PR 764 crawler tractors.
Engine air pre-fi lter
Large dust particles are removed in
the separator before they reach the
air fi lter.
In landfi ll applications, this results in
longer cleaning intervals for the air
fi lter cartridges and increases the
service life of the engine.
PR 724 Litronic – PR 764 Litronic
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Hydraulic oil thermometer
This enables the driver to keep a
constant check on the temperature
of the hydraulic oil and to respond
quickly to overheating.
External air supply for alternator
Cooling air for the alternator fl ows
through the pre-screener that removes debris from the air to increase
alternator life.
This option is only available for the
PR 744, PR 754 and PR 764 crawler
tractors.
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Options in detail
Rear counterweight
If there is no ripper, a rear counterweight can be installed to counteract
the additional weight of a larger blade
or trash rack. This ensures the optimal balance of the machine is maintained.
Sealing provision
To prevent the ingress of debris into
the base machine, critical parts are
fi tted with special seals:
- Base machine - cab seal
- Engine compartment seal (photo)
- Belly pan seal
Rear striker bar
The striker bar prevents bulky material from being drawn up onto the
undercarriage. It can also be confi gured with a ripper or counterweight.
For the PR 744, PR 754 and PR 764
front-mounted striker bars are also
available.
Additional lights on
the lift cylinders
Optional lights on the lift cylinders
are available for use in bad visibility conditions. Their high position
means that they light up the working
area perfectly even when using special blades with trash racks, or when
the front attachment is raised.
PR 724 Litronic – PR 764 Litronic
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Options in detail
Additional cab air fi ltration
An external fi ltration system can be
installed for ambient air with extremely high levels of dust or pollutants.
It supplies the cab with clean air,
which has been fi ltered several
times.
Thermal shielding for turbo charger
This cover plate prevents any infl ammable debris from being deposited
and igniting at the turbocharger – the
hottest part of the exhaust system.
PR 724 Litronic – PR 764 Litronic
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Heat insulation for exhaust system
In some cases it might be necessary
to encase the whole exhaust gas
system with heat insulation. This is a
reliable way to prevent infl ammable
materials from coming into contact
with the exhaust gas system.
Fire extinguisher /
fi re suppression system
A 6 kg fi re extinguisher can be
mounted within arms length of the
driver.
Complete fi re suppression systems
with manual or automatic triggering provide an even higher level of
safety. They help to keep damage to
a minimum in case a fi re occurs.
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Economy
The tilting cab and the wide-opening service doors on
the Liebherr crawler tractors enable servicing and maintenance work to be performed rapidly and effi ciently.
Comfort
The integrated ROPS/FOPS structure ensures the driver
always has an excellent view to all sides. This is essential
for working safely and effi ciently.
Performance
Liebherr diesel engines operate at constant speed in the
range of lowest specifi c consumption. Thus, high performance is combined with maximum effi ciency.
Reliability
Only components which conform to the high Liebherr
quality standards are used in our machines.
PR 724 Litronic – PR 764 Litronic
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The Liebherr Group of Companies
Wide product range
The Liebherr Group is one of the largest construction
equipment manufacturers in the world. Liebherr’s highvalue products and services enjoy a high reputation in
many other fields, too. The wide range includes domes tic appliances, aerospace and transportation systems,
machine tools and maritime cranes.
Exceptional customer benefit
Every product line provides a complete range of models
in many different versions. With both its technical excel lence and acknowledged quality, Liebherr products offer
a maximum of customer benefits in practical application.
State-of-the-art technology
To provide consistent, top quality products, Liebherr
attaches great importance to each product area, its
components and core technologies. Important modules
and components are developed and manu factured inhouse, for instance the entire drive and control techno logy for construction equipment.
Worldwide and independent
Hans Liebherr founded the Liebherr family company in
1949. Since that time, the enterprise has steadily grown to
a Group of 100 companies with over 30,000 employees
located on all continents. The corporate headquarters of
the Group is Liebherr-International AG in Bulle, Switzerland.
The Liebherr family is the sole owner of the com pany.
www.liebherr.com
Printed in Germany by Typodruck LWT-10493428-?.?-10.08 Illustrations and data may differ from standard equipment. Subject to change without notice.
Liebherr-Werk Telfs GmbH
Hans Liebherr-Straße 35, A-6410 Telfs
콯 +43 50809 6-100, Fax +43 50809 6-7772
www.liebherr.com, E-Mail: lwt.marketing@liebherr.com
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